Or you can download the Gem and do the same thing without using the --remote flag.

Note that the build process assumes that you have the evolution-data-server-devel header files and whatnot installed. I've developed this on Fedora Core 3, so if you get the RPMs for that it should work fine.

Or you can download the zip file; it contains a precompiled shared object library as well as the source code and the extconf.rb necessary to rebuild it.